RFA spokesman Matt Hartwig argues that for years before the ethanol mandate, corn prices were artificially low.
再生能源协会发言人Matt Hartwig辩论到，在乙醇政策出台前，玉米价格被人为地压低了。
RFA spokesman Matt Hartwig argues that for years before the ethanol mandate, corn prices were artificially low.
再生能源协会发言人Matt Hartwig辩论到，在乙醇政策出台前，玉米价格被人为地压低了。
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